413 search results - page 40 / 83 » Optimizing Queries Across Diverse Data Sources |
CASCON
1997
14 years 11 months ago
1997
The ACORN architecture is a multi-agent based system deployed across networks which provides a means for augmenting community-based systems of communication between people. In the...
154
click to vote
ICDE
2001
IEEE
15 years 11 months ago
2001
IEEE
We propose an extension to current view-based mediator systems called model-based mediation, in which views are defined and executed at the level of conceptual models (CMs) rather...
APWEB
2004
Springer
15 years 3 months ago
2004
Springer
Queries to data warehouses often involve hundreds of complex aggregations over large volumes of data, and so it is infeasible to compute these queries by scanning the data sources ...
EDBT
2002
ACM
15 years 10 months ago
2002
ACM
Maintaining statistics on multidimensional data distributions is crucial for predicting the run-time and result size of queries and data analysis tasks with acceptable accuracy. To...
168
click to vote
VLDB
2001
ACM
15 years 10 months ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessin...